{
    "$schema":"http://json-schema.org/draft-03/schema#",

    "title":"envelope",
    "type":"object",

    "properties":{
        "xmin":{
            "title":"xmin",
            "type":"number",
            "required":true},
        "ymin":{
            "title":"ymin",
            "type":"number",
            "required":true},
        "xmax":{
            "title":"xmax",
            "type":"number",
            "required":true},
        "ymax":{
            "title":"ymax",
            "type":"number",
            "required":true},
        "spatialReference":{
            "$ref" : "spatialreference.json"}
    }
}